In November 2023,a porcelain jar with four loops was unearthed from an Eastern Jin cellar discovered inside the city ruins of Guchengzhai Site in Xinmi.The unearthed porcelain jar contained a large number of copper coins,such as Ban-Liang coins,Wu-Zhu coins,Daquan-Wushi coins,Huo-Quan coins,Daquan-Dangqian coins,Zhibai-Wuzhu coins,Daping-Baiqian coins and Han-Xing coins,and ironware like mirrors,knives,sickles,chisels and arrowheads.The discovered copper coins are large in number and relatively well-preserved.The finds constitute new archaeological evidence for the research into currencies,ironware and porcelains used in Zhengzhou back in Han and Jin dynasties.